Dr. Norbert Weiss is responsible for the entries in the DSM Bacterial Nomenclature Up-to-Date. He writes: Actinobacillus actinomycetemcomitans was validly transferred to the genus Haemophilus in 1985 by Potts et al. as Haemophilus actinomycetemcomitans comb. nov. In 1987, the ICSB Subcommittee on Pasteurellaceae and Related Organisms did not favor this transfer (IJSB 37:474) but the statement "is not favored", nomenclaturally, does not change the valid transfer. Many workers especially from medical field, however, prefer the old name Actinobacillus actinomycetemcomitans or use Actinobacillus (Haemophilus) actinomycetemcomitans. rRNA cistron similarity studies by De Ley and coworkers (IJSB 40:126-137) indicate that there is a need for a radical rearrangement of genera and species within the family Pasteurellaceae but no decision has been taken up to now. Actinomycetemcomitans most probably deserves its own genus.

De Ley, J., Mannheim, W., Mutters, R., Piechulla, K., Tytgat, R., Segers, P., Bisgaard, M., Frederiksen, W., Hinz, K.H., and Vanhoucke, M. "Inter- and intrafamilial similarities of rRNA cistrons of the Pasteurellaceae." Int. J. Syst. Bacteriol. (1990) 40:126-137.

Guettler, M.V., Rumler, D., and Jain, M.K. "Actinobacillus succinogenes sp. nov., a novel succinic-acid-producing bacterium from the bovine rumen." Int. J. Syst. Bacteriol. (1999) 49:207-216.

ICSB, Subcommittee on Pasteurellaceae and Related Organisms "Minutes of the meetings, 6 and 10 September 1986, Manchester, England." Int. J. Syst. Bacteriol. (1987) 37:474. [No PubMed record available.]

King, E.O., and Tatum, H.W.: J. Infect. Dis. (1962) 111:85-94. [Description] [No PubMed record available.]

Klinger, R. "Untersuchungen uber menschliche Atkinomykose." Zentralbl. Bakteriol. Parasitenkd. Infektionskr. Hyg. Abt. I (1912) 62:191-200. [No PubMed record available.]

Moore, W.E.C., and Moore, L.V.H. "Index of the bacterial and yeast nomenclatural changes published in the International Journal of Systematic Bacteriology since the 1980 Approved Lists of Bacterial Names (1 January 1980 to 1 January 1989)." American Society for Microbiology, Washington, D.C., 1989. [No PubMed record available.]

Norskov-Lauritsen, N., and Kilian, M. "Reclassification of Actinobacillus actinomycetemcomitans, Haemophilus aphrophilus, Haemophilus paraphrophilus and Haemophilus segnis as Aggregatibacter actinomycetemcomitans gen. nov., comb. nov., Aggregatibacter aphrophilus comb. nov. and Aggregatibacter segnis comb. nov., and emended description of Aggregatibacter aphrophilus to include V factor-dependent and V factor-independent isolates." Int. J. Syst. Evol. Microbiol. (2006) 56:2135-2146.

Potts, T.V., Zambon, J.J., and Genco, R.J. "Reassignment of Actinobacillus actinomycetemcomitans to the genus Haemophilus as Haemophilus actinomycetemcomitans comb. nov." Int. J. Syst. Bacteriol. (1985) 35:337-341. [No PubMed record available.]

Skerman, V.B.D., McGowan, V., and Sneath, P.H.A. (editors): "Approved lists of bacterial names." Int. J. Syst. Bacteriol. (1980) 30:225-420.

Topley, W.W.C., and Wilson, G.S. The Principles of Bacteriology and Immunity, 1st ed. (1929) Edward Arnold and Co., London, pp. 1-587. [No PubMed record available.]